<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>font-weight</title>
</head>
<body>
    <a href="./个人主页.html">个人主页</a>
    <p>芜湖起飞~~~~~~~</p>
    <h1>芜湖起飞！！！！</h1>
    <p>芜湖起飞~~~~~~~</p>
    <h1>芜湖起飞！！！！</h1>
    <p>芜湖起飞~~~~~~~</p>
    <h1>芜湖起飞！！！！</h1>
    <p>芜湖起飞~~~~~~~</p>
    <h1>芜湖起飞！！！！</h1>
    <p>芜湖起飞~~~~~~~</p>
    <h1>芜湖起飞！！！！</h1>
    <p>芜湖起飞~~~~~~~</p>
    <h1>芜湖起飞！！！！</h1>
    <p>芜湖起飞~~~~~~~</p>
    <h1>芜湖起飞！！！！</h1>
    <p>芜湖起飞~~~~~~~</p>
    <h1>芜湖起飞！！！！</h1>
    <p>芜湖起飞~~~~~~~</p>
    <h1>芜湖起飞！！！！</h1>
    <p>芜湖起飞~~~~~~~</p>
    <h1>芜湖起飞！！！！</h1>

</body>
<style>
    a{
        font-size: 3rem;
        background-color: purple;
    }
    a:hover{
        color: black;
    }
   p:nth-of-type(1){
       font-weight: 100;
   }
   p:nth-of-type(2){
       font-weight: 200;
   }
   p:nth-of-type(3){
       font-weight: 300;
   }
   p:nth-of-type(4){
       font-weight: 400;
   }
   p:nth-of-type(5){
       font-weight: 500;
   }
   p:nth-of-type(6){
       font-weight: 600;
   }
   p:nth-of-type(7){
       font-weight: 700;
   }
   p:nth-of-type(8){
       font-weight: 800;
   }
   p:nth-of-type(9){
       font-weight: 900;
   }
   h1:nth-of-type(4){
       font-weight:bolder;
       color: red;
   }
   h1:nth-of-type(1){
       font-weight:bold;
       color: aqua;
   }
     h1:nth-of-type(2){
         font-weight: lighter;
         color: yellow;
     }
     h1:nth-of-type(3){
         font-weight: normal;
         color: green;
     }
</style>
</html>